If there is a champion among contagions, it may well be the lowly rhinovirus, responsible for many of the coughs and sniffles that trouble us this time of year. Rhinoviruses are spectacularly effective at infecting humans. Americans suffer one billion colds a year, and rhinoviruses are the leading cause of these infections.
Scientists have never been sure why they are so effective, but now a team at Yale University may have found a clue. The scientists argue that rhinoviruses have found a blind spot in the human immune system: They take advantage of the cold air in our noses.
“I found the work to be fascinating and convincing,” said Dr. James E. Gern, a pediatrician at the University of Wisconsin School of Medicine, who was not involved in the study. But he cautioned that rhinoviruses infecting cells in a dish may not behave as they would in, say, a wheezing subway commuter.
While scientists have long speculated that fevers can be good for us, they haven’t dug into the molecular details explaining exactly why. The new finding suggests that our bodies may trigger fevers to make the immune system fight infections more effectively.
Read full, original article: Unraveling the Key to a Cold Virus’s Effectiveness
